Solution For the planetary drive gear tooth load distribution, increase the comprehensive elastic coefficient ki on the input and output paths of any planetary gear or reduce the meshing elastic coefficient of any planetary gear and center gear tooth to kxi, which can reduce the maximum tooth The force Fxmax, but can not completely eliminate the impact of the planet carrier and planetary axle deformation. The effects of planetary carrier and planetary axle distortion can be completely eliminated. When the self-aligning bearing 3 in FIG. 9 works, the inner and outer rings are allowed to have a certain relative rotation angle. When the carrier and the planetary axle are loaded, the deformation generated by the self-aligning bearing is offset by the relative rotation of the inner and outer rings of the self-aligning bearing, thereby Ensure that the axes of the planetary gears and the center wheel are parallel, and the tooth load distribution of the meshing parts is even.
For the inter-tooth load distribution of planetary gears greater than or equal to 4 planets, the maximum inter-tooth load Fxmax depends on the consistency between the spring constant kr and the distance Lr of the planet wheel axis from the theoretical circle; the higher the machining accuracy, the Lrn's The better the consistency, the smaller the maximum inter-tooth load Fxmax, but the higher the corresponding cost; the method of reducing the elastic modulus kr can also be used to reduce the maximum inter-tooth load. Under the premise of meeting the strength requirements, the planetary wheel diameter should be reduced as much as possible, and the round hole can be made at the center of the planetary wheel. At the same time, the bearing can be placed in the middle part, and the elastic coefficient kr can be reduced, thereby reducing the maximum inter-tooth load.
In the planetary transmission structure, the uneven distribution of gear tooth load is aggravated as the input load increases. According to the finite element analysis, the tooth load distribution is uneven, and the additional stress is a high proportion. This is extremely unfavorable for the low-speed heavy-duty planetary transmission. The mechanism of the planetary wheel single-steering bearing support can completely eliminate the tooth direction. The load distribution is uneven. Through research and analysis, the reasons for the coaxiality of the inner and outer circumference of the catheter are analyzed. The advanced methods and detection and rework methods for processing the conduit holes in domestic excellent enterprises are analyzed and compared. Facts have proved that the use of catheter outer circle positioning processing of the conduit hole, and the application of multi-station in the batch machine line is an advanced and reliable, no loss of efficiency, for the subsequent similar hole processing, there is a certain reference significance.